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      Errata for F. W. Bessel's paper on geodesics
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    <meta name="author" content="Charles F. F. Karney" />
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    <h3>Errata for F. W. Bessel (1825): <i>The calculation of longitude and
      latitude from geodesic measurements</i> (translated by
      C. F. F. Karney and R. E. Deakin).
    </h3>
    <p>Errata in
	<a href="https://doi.org/10.1002/asna.201011352">
 	  Astron. Nachr. <b>331</b>(8), 852&ndash;861 (Sept. 2010)</a>:
	<ul>
	  <li>Sec. 2, para. 1: replace &ldquo;radius of curvature
	  by <i>R</i>&rdquo; by &ldquo;radius of curvature
	  be <i>R</i>&rdquo;.
	  <li>Sec. 2, 4th last eq.: use the partial derivative in place of
	    &ldquo;d<i>U</i>/d<i>p</i>&rdquo;.
	  <li>Some links were omitted:
	    <ul>
	      <li>Bessel's original paper:
		doi: <a href="https://doi.org/10.1002/asna.18260041601">
		  10.1002/asna.18260041601</a>;
		facsimile:
		<a href="http://adsabs.harvard.edu/full/1825AN......4..241B">
		  http://adsabs.harvard.edu/full/1825AN......4..241B</a>.
	      <li>Clairaut's paper (footnote 6):
		<a href="https://books.google.com/books?id=GOAEAAAAQAAJ&pg=PA406">
		  https://books.google.com/books?id=GOAEAAAAQAAJ&amp;pg=PA406</a>.
	      <li>Legendre, <i>Exercices de Calcul Int&eacute;gral</i>, Vol 1
		(footnote 14):
		<a href="https://books.google.com/books?id=riIOAAAAQAAJ&printsec=titlepage">
		  https://books.google.com/books?id=riIOAAAAQAAJ</a>.
	      <li>von M&uuml;ffling's paper (footnote 21):
		<a href="http://adsabs.harvard.edu/full/1823AN......2...33V">
		  http://adsabs.harvard.edu/full/1823AN......2...33V</a>.
	    </ul>
	</ul>
    </p>
    <p>Errata in
      <a href="https://arxiv.org/abs/0908.1824v2">arXiv:0908.1824v2
      (Feb. 2010)</a> [these have been corrected
      in <a href="https://arxiv.org/abs/0908.1824v3">arXiv:0908.1824v3,
      (Mar. 2010)</a>]:
      <ul>
	<li>Footnote 1: the initial quotation marks on &ldquo;du
	  S&eacute;jour's method&rdquo; are the wrong way round.
	<li>Sec. 2, para. 1: replace &ldquo;the azimuth of line
	directed&rdquo; by &ldquo;the azimuth of the line
	directed&rdquo;.
	<li>Sec. 2, para. 1: replace &ldquo;radius of curvature
	by <i>R</i>&rdquo; by &ldquo;radius of curvature
	be <i>R</i>&rdquo;.
	  <li>Sec. 2, 4th last eq.: use the partial derivative in place of
	    &ldquo;<i>dU</i>/<i>dp</i>&rdquo;.
	<li>Page 5, col. 2, line 2: replace &ldquo;adding the first term in the
	series&rdquo; by &ldquo;adding the next term in the
	series&rdquo;.
	<li>Sec. 9, para. 1: replace &ldquo;Thus it not possible&rdquo;
	by &ldquo;Thus it is not possible&rdquo;.
      </ul>
    </p>
    <hr>
    <address>Charles Karney
      <a href="mailto:charles@karney.com">&lt;charles@karney.com&gt;</a>
      (2017-09-30)</address>
    <br>
    <a href="https://geographiclib.sourceforge.io">
      GeographicLib home
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